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server/routers/kfu-m-24-1/back-new/shared/hateoas.js

@@ -0,0 +1,8 @@
+function makeLinks(base, links) {
+  const result = {};
+  for (const [rel, path] of Object.entries(links)) {
+    result[rel] = { href: base + path };
+  }
+  return result;
+}
+module.exports = makeLinks; 

server/routers/kfu-m-24-1/back-new/shared/usersDb.js

@@ -0,0 +1,20 @@
+let users = [
+  { id: 1, username: 'test', password: '123456', email: 'test@example.com', firstName: 'Test', lastName: 'User' }
+];
+let nextId = 2;
+
+exports.findUser = (username, email, password) =>
+  users.find(u => (u.username === username || u.email === email) && u.password === password);
+
+exports.findById = (id) => users.find(u => u.id === id);
+
+exports.addUser = ({ username, password, email, firstName, lastName }) => {
+  const newUser = { id: nextId++, username, password, email, firstName, lastName };
+  users.push(newUser);
+  return newUser;
+};
+
+exports.exists = (username, email) =>
+  users.some(u => u.username === username || u.email === email);
+
+exports.getAll = () => users;